Crank-hanger.



H. E. HOGUE.

CRANK HANGER.

APPLICATION FILED NOV-12,19l7.

l 268,35 E. Q Patented June 4, 1918.

Honnefnoenn; or vnncn, CALIFORNIA.

1 ordinii-HANGER;

igecefgesi.

specification@ Lettersxrtent. Patented* June d, 1913;.

i Application fledN-ovcmbenm, 19,17. i Serial-No. `2015568"l To allwhomc't mez-'yf0cm@ermV y y if Be i it know-1r` that I, Homin i HceUr;-ai citizen oil-the United States, and. a resident, of- Venice, inthecounty ofLosAngelesand- StateI of California', have `inventedcertain,

suriffaces thereof spaced.- relatively.,` Wide;V

apa-rt and` outwardly l.o'the :plane oli the` frontWheel; to provide`awconstruction wherein no cones: are mounted. upon the crank shaft; `tolprovide a crank-ishait Wh-i'ch comprises but twoV partsjadapted to be'`interiitted between the `bearings-gg to provide a crank'hanger and shaftwhich` comprises relatively` few parts eapableo being fquickly" andieasily assembled and separated; toV provide a: crank hanger which eoemay not be easily broken f-by sideistrain, and which cannoteasiflyqwea-rg. loose; and tof provide` leonstruction` foto. cran-khanger embodying thefnovel features oiicthisv in.F Vention and-Whichislet` the same exterior (linnen"sionsb as @the crank han-gers: now,coimf` monly i. employed and which! be,` easily fitted into f thecla-inl ing; bracket otloicyele frames fwifthoutlalteringthe sifzcorconstructionoftliie-same.- i L V i 1.

Theabove, and various y other ohjectsqand advantages `off thisJinvention VWill `bei inpart; des61,11*.ido'-eclf,` in p art miderstood,"from? the Aliolloiizingg detailed description of `the.. presf entpreferredembodiment; the: saine i being illnetrated in the accompanyingdrawing,

W'l'ierein; i i f iA Figure 1k is a; longitudinalsection through.accranlr hanger constructed` according; to the p'resentinvention. y rFig. 2 is a detail side elevation, partly; sectionsof. once end of thecrfanlr 4sh-ata` endof the crank shaft `Referring` .tof the drawing,fhtjdesignates av portion,outv a bicycle tramewoordinaryconstri-ictionand` which"l has [as a part .thereof the cylindricalclamping lfbrachet B? split longitudinally atits lower` sideand. adaptedtombe drawn intov binding. engagement .with the crank. hanger by `meansgofbinding` screws C.;

The crank hanger comprises-:aspaeer 10 intheform1 oli' `a `tubulartbodyexternally threaded at opposite ends and provided at the. inner'. end.of V1one olfits; threaded portions. with an` outstanding yannularshoulder `11,.

ScreW-threaded-upon the opposite lends ot l l the spacer 1.0` are: conesand 113,the same.-`

being: in' the form of caps and.havingan`- nular set dor reducedportionsl 14e@ ori-.their outer ends with" annular grooves.. thereinoianing raceways for the` reception-` of; ball'.-`

bearings The cone 12. is adapteditobe turnedL upl against the` shoulder,11. andftolbe` locked and held thereby in fined relationf to the spacer10. The.l other cone13isiadapt ed to turned upon the end of" the spacer10 tofadjnstthe "cone" 13 toward and fromv the cone 'lhe spacer or body10 together .i with its cones;12 andv 113 is adapted. to be ittedntlie.cylindrical brackets B otthebicycle frame` andi tobeA clamped.thereinfnponfthe .tighten.-1 ing)l o'f the bolt u AThe braclzet Buwhenclaniped .secures the cones` 12 and1 `13: in. ad# `inet-ed;-nQSitOll- 4proyidedavithl a cranlr shaft, the samecome` pricing independentsections h6 and As shown. in Fig.. 2,1the clanlr shaft section 1Gvthereon alimenter cone `cap` 21, andthe shaftV 1G- is preerablylprovidedwith `reduced neck. or: connectingA portion 221.between' yther outer endof the shait` andthe integral cone capiil. The capfQl is- `providedtliereiitwith an a-nnularraceway 23 adapted y. to receive' the ballbearings 15 thereinand formed to opposethe raceway, 14 of the adjacent`inner conej12.. J'heinner Wall ofl the cap 21 is` stepped A or`counter-bored` to-` freelyI l ad jiu-stably, receive the ,adj afcentlendet one, of

side of the ca 21 is a crank arm 28 and which may be provided upon itsinner side with alug or projection 29 adapted'to be secured to thesprocket wheel 25 for reinforcingthe same.

The section 17 of the crank shaft, as shown in Fig. 3, comprises arelatively long body part having a tapering bore adapted to receive thetapering end 19 of the other crank shaft section 16. The tapering boreofthe section 17extends through the neck `30 of the section and throughthe integral coneI cap 31 carried upon the outer end of the section 17.The threaded stem 20 pro jects into a countersink 32 formed in theouterside of the cap 31 and is adapted tc "receive therein a bindingwasher 33 and a ing of the `bearings 15.

lock nut 34. The nut "34 is adapted to hold the shaft sections 16 and 17in interiitting relation. The inner end of the shaft seetion 17 isprovided with recesses or notches 35 adapted to receive the teeth 18therein for holding the sections 16 and 17 from relative turningmovement. The cap 31 1s provided with a `crank arm 36 adapted to extendin an opposite direction from that` in which the crank arm 28 extends.The cap 31 is substantially of the same construction as that of the cap21 and is adapted to house the adjacent ballv bearings 15` and to fitover the cone 13 and the adjacent end of" the bracket B. The crank shaftis provided with the reduced necks 22 and 30 for passage through thecones 12 and 13 to clear the same, and alsoto admitof a limitedvibration of thecrank shaft upon the wearbearings and `other parts in"surface contact "may be `taken up by the adjustment of but oneof thecones, such asthe cone 13, and as thesprocket 25 is mounted upon theinner end of the cap `21, the sprocket lies in a plane which intersectsthe axis ofthe hanger between the opposite end bearings 15, `thebearings being so' arranged 1nv relatively wide apart position to reducethe leverage and friction placed upon the bearingsfby the mounting ofthe sprocket wheel outwardly of one of the bearings.

It is of course understood that various changes and modifications may bemade in the details of construction and design of the above specificallydescribed embodiment of Whereupon the this invention without departingfrom `the spirit thereof, such changes and modifications beingrestricted only by the scope of the following claims` u I claim: A

1. Ina crank hanger, the combination of a spacer, cones mounted on theopposite u ends of thespacer and being adjustable to ward and from eachother, a two-part interlocked crank shaft adapted to be fitted in theopposite ends of the spacer and through said cones and provided withintegral caps upon ytheir `outer ends adapted' to engage over the spacer`and over said cones, bearings carried between the Vcones and the caps,one part of the crank shaft having a tapering spindle and the other parthaving a cor` respondingly tapered bore adapted to receive the spindle,and adjustable means for binding the parts together.

2. In a crank hanger, the combination of a spacer, cones mounted on theopposite ends of the spacer and being adjustable toward and fromeachother, a two-part interlocked crankshaft adapted to be fitted yinthe opposite ends ofthe spacer and through said cones and providedwithintegral caps upon `their outer ends adapted to engage over thespacer and over said cones, and

bearings `arranged between the cones andi the caps, said parts of thecrank shaft being reduced in diameter opposite the cones to admit freevibration of the crank shaft upon undue wear and lack of properadjustment of the bearings and raceways for preventinginjury tothe conesby direct contact of the crank shaft; c f

3. In` acrank hanger,lthe` combination of a spacer,\acone detachablymounted onl one end of the spacer, `a second `cone adjustably theopposite end of the spacer,

mounted on said cones having exterior raceways adapted to receiveballbearings, caps fitting over the cones and provided with interiorraceways `adapted to receive said balls, a shaft section carried Vuponone ofthe caps and projecting intoone endfof the spacer and tapering atsaid end, a secondshaftsection carried upon the other cap and projectinginto the other end of the spacer and having a tapering boreadapted toreceive the tapering end of the first shaft section, a binding nutcarried upon the end of said first shaft section and adapted to bearagainst the cap of the other shaft section, and crank arms extending inopposite direction from the caps.l

4. In a'crank hanger, the combination of a spacer, cones threaded uponthe opposite ends of the spacer and adapted to fit there# with into thebracket fof a bicycle frame, a pair of crank shaft sections projectinginto the opposite vends of the spacer land provided with integral capsupon theiriouter 1,268,351 fai bore adapted to receive the tapering endof the rst section and having notches for the reception of said clutchpiece, said sec- 10 i ond cap provided with a depression in its outerside for the reception of the reduced end of the rst shaft section, alocking nut arranged upon said reduced end of the first shaft sectionand seated in Said depression 15 and crank arms projecting in oppositedirection from said caps.

HOMER E. HOGUE.

Copies of lthis patent may be obtained for ve cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

